Controller heat dissipation structure for shielding pump, motor and shielding pump

Abstract

This utility model discloses a heat dissipation structure for a controller of a canned motor pump, a motor, and a canned motor pump. The heat dissipation control structure is used to dissipate heat from the motor controller of the canned motor pump. The controller controls the motor, and a mounting cavity is formed within the motor. A circulating cooling channel flows through the mounting cavity within the canned motor pump. The heat dissipation structure includes a heat dissipation shell with a first surface, which serves as the mounting surface for the controller. A second surface is formed on the back of the heat dissipation shell opposite the first surface, and a heat dissipation pipe for circulating cooling medium is provided on the second surface. The heat dissipation pipe connects to the circulating cooling channel of the canned motor pump. This utility model, by providing a heat dissipation structure connected to the circulating cooling channel of the canned motor pump, enables the circulating cooling medium within the canned motor pump to dissipate heat from the motor controller, improving the heat dissipation efficiency of the motor controller and thus enhancing the operational stability and service life of the motor and the canned motor pump.

Description

Technical Field

[0001] This application relates to the field of canned motor pump technology, and in particular to a controller heat dissipation structure, motor and canned motor pump for a canned motor pump. Background Technology

[0002] A canned motor pump is a seal-free pump used for conveying liquids. The pump body and motor are sealed together. The shielding structure isolates the internal components of the motor stator and rotor from the conveyed medium, preventing leakage. At the same time, the motor is equipped with a circulating cooling channel that connects to the pump body. A portion of the conveyed liquid flows through the circulating cooling channel to cool the motor.

[0003] In related technologies, the motor controller is located outside the housing and the housing adopts a split design. The motor controller is fixedly installed on the outer wall of the housing and uses air heat dissipation, which has low heat dissipation efficiency. When the ambient temperature is high, the temperature of the motor controller will be too high, which will seriously affect the operating stability and service life of the controller.

[0004] Therefore, it is essential to design a controller heat dissipation structure and a shielded pump that have higher cooling efficiency and a more compact overall motor structure. Utility Model Content

[0005] This application aims to address one of the technical problems in related technologies to a certain extent. To this end, this application provides a heat dissipation structure for a controller of a canned motor pump, used to dissipate heat from the motor controller of the canned motor pump. The controller controls the motor, and a mounting cavity is formed within the motor. A circulating cooling channel is formed within the canned motor pump, flowing through the mounting cavity. The heat dissipation structure includes a heat dissipation housing, on which a first surface is formed. The first surface serves as the mounting surface of the controller. A second surface is formed on the back side of the heat dissipation housing opposite the first surface. A heat dissipation pipe for circulating cooling medium is provided on the second surface, and the heat dissipation pipe connects to the circulating cooling channel of the canned motor pump.

[0006] In this technical solution, the controller is mounted on the first surface of the heat sink housing to achieve cooling of the controller by the heat sink housing. A heat dissipation pipe is provided on the second surface of the heat sink housing and the back side of the first surface to connect with the circulating cooling channel of the shielded pump. The liquid cooling medium in the circulating cooling channel of the shielded pump flows through the heat dissipation pipe to achieve liquid cooling of the heat sink housing and the controller. The liquid cooling medium has a higher heat exchange efficiency. Therefore, the controller heat dissipation structure of this application can improve the heat dissipation efficiency of the motor controller, thereby improving the operating stability and service life of the motor.

[0007] Preferably, the heat dissipation pipe includes a heat exchange pipe, a first bend and a second bend, the first bend and the second bend being sealed to both ends of the heat exchange pipe, and the first bend and the second bend respectively connecting the pump chamber of the shielded pump and the mounting chamber of the motor.

[0008] Preferably, the second surface of the heat dissipation housing is integrally formed with a mounting through hole for mounting the heat exchange tube.

[0009] Preferably, the heat exchange tube is integrally formed on the second surface of the heat dissipation housing.

[0010] Preferably, the heat dissipation housing is made of aluminum profile.

[0011] Preferably, the controller includes a circuit board, the mounting surface of the heat sink abuts against the circuit board, and the circuit board is fixedly connected to the heat sink by screws.

[0012] Secondly, to achieve the above objectives, this application also provides a motor, including a housing and a controller. The housing has an internal mounting cavity, within which a motor rotor assembly and a motor stator assembly are disposed. The motor rotor assembly includes an output shaft extending out of a first end of the housing. The controller employs a heat dissipation structure as described in any of the above technical solutions, and the heat dissipation structure is sealed to a second end of the housing away from the first end. The reasoning process for the beneficial effects of the motor and controller heat dissipation structure provided in this application is similar and will not be repeated here.

[0013] Preferably, a mounting base is provided on the second end of the housing, the controller heat dissipation structure is fixedly connected to the mounting base, and a cover is also provided on the outside of the controller heat dissipation structure and the mounting base.

[0014] Preferably, a connecting seat is also provided between the mounting base and the housing cover in a sealed connection.

[0015] Thirdly, to achieve the above objectives, this application also provides a shielded pump, including a pump body and a motor, wherein the motor is configured as described in any of the above technical solutions. The reasoning process for the beneficial effects of the shielded pump and the controller heat dissipation structure provided in this application is similar, and will not be repeated here.

[0016] These features and advantages of this application will be disclosed in detail in the following specific embodiments and accompanying drawings. The best embodiments or means of this application will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this application. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0017] The following description, in conjunction with the accompanying drawings, further illustrates this application:

[0018] Figure 1 This is a schematic diagram of the controller heat dissipation structure according to an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the heat dissipation housing and heat dissipation pipes in a disassembled state according to an embodiment of this application;

[0020] Figure 3 This is a three-dimensional structural diagram of the shielded pump according to an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the explosion of the shielded pump according to an embodiment of this application;

[0022] Figure 5 This is a cross-sectional view of a shielded pump according to an embodiment of this application;

[0023] Figure 6 This is a cross-sectional view of another shielded pump according to an embodiment of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] Among them, 110 is the heat dissipation shell; 111 is the first surface; 112 is the second surface; 120 is the heat dissipation pipe; 121 is the heat exchange pipe; 122 is the first bend; 123 is the second bend; 130 is the mounting through hole; 140 is the circuit board; 210 is the housing; 220 is the mounting base; 230 is the mounting cavity; 240 is the shell cover; 250 is the connecting base; and 310 is the pump chamber. Detailed Implementation

[0026] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this application and should not be construed as limiting it.

[0027] The terms "an embodiment," "example," or "example" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this application. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0028] A canned motor pump is a seal-free pump used for conveying liquids. The pump body and motor are sealed together, and the shielding structure isolates the motor stator assembly from the rotor assembly and the conveyed medium, preventing leakage. Simultaneously, a circulating cooling channel allows the conveyed liquid medium to flow into the rotor assembly to cool the motor and lubricate the rotor bearings. However, in related technologies, the motor controller is located outside the motor housing 210, using an independent cooling system or lacking a cooling system altogether. In high ambient temperatures, the controller without a cooling system will overheat, affecting its operational stability and lifespan. Designing an independent cooling system would increase the size and installation difficulty of the canned motor pump. Therefore, the researchers in this application have innovated a canned motor pump structure that utilizes an internal cooling circulation channel to dissipate heat from the controller.

[0029] like Figure 1 , 2 As shown, this embodiment provides a heat dissipation structure for a controller of a canned motor pump, used to dissipate heat from the motor controller of the canned motor pump. The controller is used to control the motor, and a mounting cavity 230 is formed inside the motor. A circulating cooling channel is formed inside the canned motor pump, flowing through the mounting cavity 230. The heat dissipation structure includes a heat dissipation housing 110, on which a first surface 111 is formed. The first surface 111 is used as the mounting surface of the controller. A second surface 112 is formed on the back side of the heat dissipation housing 110 opposite to the first surface 111. A heat dissipation pipe 120 for circulating cooling medium is provided on the second surface 112, and the heat dissipation pipe 120 is connected to the circulating cooling channel of the canned motor pump. Specifically, the canned motor pump of this embodiment includes a pump body and a motor. The motor includes a housing 210 with a mounting cavity 230 formed inside. A stator assembly and a rotor assembly are disposed within the mounting cavity 230. The rotor assembly is disposed inside the shielding sleeve assembly, and the stator assembly is disposed outside the shielding sleeve assembly. The shielding sleeve assembly achieves isolation and sealing between the stator assembly and the rotor assembly. A circulating cooling channel allows liquid medium to flow from the pump chamber of the pump body along the channel, through the heat dissipation pipe 120, and then into the shielding sleeve from the bottom. It then flows from the bottom of the shielding sleeve along the rotor assembly to the top opening of the shielding sleeve. A bracket cover is provided at the top opening of the shielding sleeve, and the bracket cover has a flow-through hole. The liquid medium inside the shielding sleeve then flows back to the pump chamber through the flow-through hole of the bracket cover. The circulating flow of the liquid medium cools the motor and controller, improving the motor's operational stability and service life. It should be noted that, in this embodiment, the first surface 111 of the heat dissipation housing 110 is configured as follows... Figure 1 The upper surface of the heat sink housing 110 in the mounting direction is shown, and the second surface 112 is the lower surface of the heat sink housing 110.

[0030] In this technical solution, the controller is installed on the first surface 111 of the heat dissipation housing 110 to achieve cooling of the controller by the heat dissipation housing 110. A heat dissipation pipe 120 is provided on the second surface 112 on the back side of the first surface 111 of the heat dissipation housing 110, which is connected to the circulating cooling channel of the shielded pump. The liquid cooling medium in the circulating cooling channel of the shielded pump flows through the heat dissipation pipe 120 to achieve liquid cooling of the heat dissipation housing 110 and the controller by the liquid cooling medium. The liquid cooling medium has a higher heat exchange efficiency. Therefore, the controller heat dissipation structure of this application can improve the heat dissipation efficiency of the motor controller, thereby improving the operating stability and service life of the motor.

[0031] In some embodiments, such as Figure 2 As shown, the heat dissipation pipe 120 includes a heat exchange pipe 121, a first bend 122, and a second bend 123. The first bend 122 and the second bend 123 are sealed to both ends of the heat exchange pipe 121. The first bend 122 and the second bend 123 are respectively connected to the pump chamber of the shielded pump and the mounting cavity 230 of the motor. Specifically, a liquid flow channel is provided on the side wall of the motor housing 210, connecting the water outlet of the pump chamber and the first bend 122. The high-pressure water flow at the water outlet of the pump chamber can flow into the first bend 122 along the liquid flow channel, and then flow into the shielding sleeve assembly of the motor in sequence along the first bend 122, the heat exchange pipe 121, and the second bend 123. In other embodiments, a pipe can also be provided between the pump chamber and the first bend 122 to transport the liquid medium.

[0032] In some embodiments, such as Figure 2 As shown, a mounting through hole 130 for mounting the heat exchange tube 121 is integrally formed on the second surface 112 of the heat dissipation housing 110. Specifically, the heat exchange tube 121 and the heat dissipation housing 110 are configured as separate structures. The first surface 111 of the heat dissipation housing 110 is used as the mounting surface of the controller, and the second surface 112 is used to mount the heat exchange tube 121. The heat exchange tube 121 and the controller are respectively located on the upper and lower opposite sides of the heat dissipation housing 110, and the heat dissipation housing 110 is configured as a thin sheet structure, which is beneficial to improving heat conduction efficiency. In other embodiments, the heat exchange tube 121 is integrally formed on the second surface 112 of the heat dissipation housing 110, that is, the heat exchange tube 121 and the heat dissipation housing 110 are configured as a single structure. The heat exchange tube 121 and the heat dissipation housing 110 are integrally cast. The single structure can reduce the number of parts and slightly improve the heat conduction efficiency.

[0033] Specifically, the heat sink 110 described in this embodiment is made of aluminum profile. Aluminum profile has the advantages of being lightweight, corrosion-resistant, easy to form, and having high thermal conductivity, making it a preferred material for manufacturing the heat sink 110.

[0034] In some embodiments, such as Figure 1 , 2 As shown, the controller includes a circuit board 140, and the mounting surface of the heat sink 110 abuts against the circuit board 140. The circuit board 140 is fixedly connected to the heat sink 110 by screws. The controller includes a circuit board 140, on which a heating element is disposed. The heat sink 110 is used to dissipate heat from the heating element of the controller. To improve the heat dissipation effect, the circuit board 140 is usually mounted in contact with the heat sink 110. In some embodiments, thermally conductive media such as thermally conductive silicone or thermally conductive resin can be provided between the heat sink 110 and the circuit board 140 to further improve the heat conduction efficiency.

[0035] like Figures 3 to 5 As shown, this application also provides a motor, including a housing 210 and a controller. The housing 210 has an internal mounting cavity 230, within which a motor rotor assembly and a motor stator assembly are disposed. The motor rotor assembly includes an output shaft that extends out of the first end of the housing 210. The controller employs a heat dissipation structure as described in any of the above technical solutions, and this heat dissipation structure is sealed to a second end of the housing 210 away from the first end. In this embodiment, the first end of the motor is the front end through which the output shaft extends (e.g., the front end of the motor). Figure 5 The motor is located on the left side (as shown), while the controller is located at the rear end relative to the front end. Setting the controller at the rear end of the housing 210 facilitates heat dissipation of the controller using the circulating cooling channel, and also facilitates electrical connection of the controller to the stator assembly in the motor mounting cavity 230.

[0036] In some embodiments, such as Figure 5 As shown, a mounting base 220 is provided on the second end of the housing 210. The controller heat dissipation structure is fixedly connected to the mounting base 220. The controller heat dissipation structure and the mounting base 220 are also covered by a cover 240. The cover 240 and the mounting base 220 are connected in a sealed manner. For example, a sealing ring is provided at the connection between the cover 240 and the mounting base 220 to prevent contaminants from entering the cover and affecting the normal operation of the controller.

[0037] In some embodiments, such as Figure 5 , 6 As shown, a connecting seat 250 is also sealingly connected between the mounting base 220 and the housing cover 240. The housing cover 240 can be directly and sealingly connected to the mounting base 220 of the housing 210, or it can be sealed by setting the connecting seat 250 between the mounting base 220 and the housing cover 240. The connecting seat 250 allows for flexible adjustment of the size of the cavity formed by the mounting base 220 and the housing cover 240, facilitating the installation of motor controllers of different sizes or structures.

[0038] In addition, such as Figure 5 , 6 As shown, this embodiment also provides a shielded pump, including a pump body and a motor, wherein the motor is configured as described in any of the above embodiments. The reasoning process for the beneficial effects of the shielded pump, motor, and controller heat dissipation structure provided in this embodiment is similar and will not be repeated here.

[0039] In summary, this embodiment integrates the controller's heat dissipation structure into the cooling circulation channel of the canned motor, utilizing the flowing liquid cooling medium within the motor to cool the motor controller, thereby improving the controller's heat dissipation efficiency and ultimately enhancing the motor's operational stability and lifespan. The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Those skilled in the art should understand that this application includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this application will be included within the scope of the claims.

Claims

1. A heat dissipation structure for a controller of a canned motor pump, used to dissipate heat from the motor controller of the canned motor pump, the controller controlling the motor, the motor having a mounting cavity (230) formed therein, and the canned motor having a circulating cooling channel flowing through the mounting cavity (230), characterized in that, The heat dissipation structure includes a heat dissipation housing (110), on which a first surface (111) is formed. The first surface (111) is used as the mounting surface of the controller. A second surface (112) is formed on the back side of the heat dissipation housing (110) opposite to the first surface (111). A heat dissipation pipe (120) for circulating cooling medium is provided on the second surface (112). The heat dissipation pipe (120) is connected to the circulating cooling channel of the shielded pump.

2. The controller heat dissipation structure according to claim 1, characterized in that, The heat dissipation pipe (120) includes a heat exchange pipe (121), a first bend (122) and a second bend (123). The first bend (122) and the second bend (123) are sealed to both ends of the heat exchange pipe (121). The first bend (122) and the second bend (123) are respectively connected to the pump chamber of the shielded pump and the mounting chamber (230) of the motor.

3. The controller heat dissipation structure according to claim 2, characterized in that, The second surface (112) of the heat dissipation housing (110) is integrally formed with a mounting through hole (130) for mounting the heat exchange tube (121).

4. The controller heat dissipation structure according to claim 2, characterized in that, The heat exchange tube (121) is integrally formed on the second surface (112) of the heat dissipation shell (110).

5. The controller heat dissipation structure according to claim 1, characterized in that, The heat dissipation housing (110) is made of aluminum profile.

6. The controller heat dissipation structure according to claim 1, characterized in that, The controller includes a circuit board (140), the mounting surface of the heat sink housing (110) abuts against the circuit board (140), and the circuit board (140) is fixedly connected to the heat sink housing (110) by screws.

7. An electric motor, comprising a housing (210) and a controller, wherein a mounting cavity (230) is formed inside the housing (210), and a motor rotor assembly and a motor stator assembly are disposed within the mounting cavity (230), the motor rotor assembly including an output shaft extending through a first end of the housing (210), characterized in that, The controller uses a controller heat dissipation structure as described in any one of claims 1 to 6, and the controller heat dissipation structure is sealed and connected to the second end of the housing (210) away from the first end.

8. The motor according to claim 7, characterized in that, A mounting base (220) is provided on the second end of the housing (210), and the controller heat dissipation structure is fixedly connected to the mounting base (220). A cover (240) is also provided on the outside of the controller heat dissipation structure and the mounting base (220).

9. The motor according to claim 8, characterized in that, A connecting seat (250) is also sealed between the mounting base (220) and the cover (240).

10. A canned motor pump, comprising a pump body and a motor, characterized in that, The motor is configured as described in any one of claims 7 to 9.

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